/* ── TopBar ──────────────────────────────────────────────── */
.topbar {
  width: 100%;
  background: rgba(255, 255, 255, 0.212);
  position: sticky;
  top: 0;
  left: 0;
  z-index: 40;
  box-sizing: border-box;
  padding: 0 2rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.topbar__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.topbar__brand-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.topbar__logo {
  display: block;
  height: auto;
  width: auto;
  max-width: 160px;
}

.topbar__controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.topbar__signup-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 0.8rem;
  border-radius: 10px;
  color: white;
  background: var(--yellow);
  text-decoration: none;
  font-weight: 400;
  font-family: inherit;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: background-color 150ms ease, color 150ms ease, transform 120ms ease;
  cursor: pointer;
}

.topbar__signup-btn:hover,
.topbar__signup-btn:focus {
  background: #fff;
  color: #000;
  transform: translateY(-1px);
  outline: none;
  box-shadow: 0 6px 18px rgba(229, 162, 26, 0.12);
}

.topbar__signup-btn:active {
  transform: translateY(0);
}

@media (max-width: 900px) {
  .topbar__inner { padding: 0.5rem 0.9rem; }
  .topbar__logo  { max-width: 140px; }
  .topbar__signup-btn { font-size: 0.9rem; padding: 0.42rem 0.9rem; }
}

@media (max-width: 480px) {
  .topbar          { padding: 0 0.5rem; }
  .topbar__inner   { padding: 0.4rem 0.75rem; gap: 0.5rem; }
  .topbar__logo    { max-width: 120px; }
  .topbar__signup-btn { padding: 0.35rem 0.75rem; font-size: 0.87rem; border-radius: 8px; }
}